Home / 319,289,318.40-478,933,977.60-242,761,814.40

Finding the Fourth Proportional to 319,289,318.40, 478,933,977.60 and 242,761,814.40

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Solution

The fourth proportional to 319,289,318.40, 478,933,977.60 and 242,761,814.40 is: 364,142,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,289,318.40 : 478,933,977.60 = 242,761,814.40 : x
  2. Step 2: Convert to fraction form
    319,289,318.40/478,933,977.60 = 242,761,814.40/x
  3. Step 3: Cross multiply
    319,289,318.40x = 478,933,977.60 × 242,761,814.40
  4. Step 4: Simplify right side
    319,289,318.40x = 116,266,881,379,984,960
  5. Step 5: Solve for x
    x = 116,266,881,379,984,960/319,289,318.40
  6. Step 6: Final answer
    x = 364,142,721.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.