Home / 261,858,284.72-392,773,188.88-80,105,462.72

Finding the Fourth Proportional to 261,858,284.72, 392,773,188.88 and 80,105,462.72

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Solution

The fourth proportional to 261,858,284.72, 392,773,188.88 and 80,105,462.72 is: 120,153,838.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,858,284.72 : 392,773,188.88 = 80,105,462.72 : x
  2. Step 2: Convert to fraction form
    261,858,284.72/392,773,188.88 = 80,105,462.72/x
  3. Step 3: Cross multiply
    261,858,284.72x = 392,773,188.88 × 80,105,462.72
  4. Step 4: Simplify right side
    261,858,284.72x = 31,463,278,039,242,356
  5. Step 5: Solve for x
    x = 31,463,278,039,242,356/261,858,284.72
  6. Step 6: Final answer
    x = 120,153,838.45

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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.