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Finding the Fourth Proportional to 292,807.80, 438,920.10 and 134,760.60

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Solution

The fourth proportional to 292,807.80, 438,920.10 and 134,760.60 is: 202,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,807.80 : 438,920.10 = 134,760.60 : x
  2. Step 2: Convert to fraction form
    292,807.80/438,920.10 = 134,760.60/x
  3. Step 3: Cross multiply
    292,807.80x = 438,920.10 × 134,760.60
  4. Step 4: Simplify right side
    292,807.80x = 59,149,136,028.06
  5. Step 5: Solve for x
    x = 59,149,136,028.06/292,807.80
  6. Step 6: Final answer
    x = 202,006.70

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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.