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Finding the Fourth Proportional to 490,740.66, 736,111.16 and 153,807.45

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Solution

The fourth proportional to 490,740.66, 736,111.16 and 153,807.45 is: 230,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,740.66 : 736,111.16 = 153,807.45 : x
  2. Step 2: Convert to fraction form
    490,740.66/736,111.16 = 153,807.45/x
  3. Step 3: Cross multiply
    490,740.66x = 736,111.16 × 153,807.45
  4. Step 4: Simplify right side
    490,740.66x = 113,219,379,667.11
  5. Step 5: Solve for x
    x = 113,219,379,667.11/490,740.66
  6. Step 6: Final answer
    x = 230,711.23

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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.