Home / 292,001.32-438,002.39-81,639.06

Finding the Fourth Proportional to 292,001.32, 438,002.39 and 81,639.06

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Solution

The fourth proportional to 292,001.32, 438,002.39 and 81,639.06 is: 122,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,001.32 : 438,002.39 = 81,639.06 : x
  2. Step 2: Convert to fraction form
    292,001.32/438,002.39 = 81,639.06/x
  3. Step 3: Cross multiply
    292,001.32x = 438,002.39 × 81,639.06
  4. Step 4: Simplify right side
    292,001.32x = 35,758,103,397.35
  5. Step 5: Solve for x
    x = 35,758,103,397.35/292,001.32
  6. Step 6: Final answer
    x = 122,458.70

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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.