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Finding the Fourth Proportional to 238,929.30, 357,802.62 and 138,785.76

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Solution

The fourth proportional to 238,929.30, 357,802.62 and 138,785.76 is: 207,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,929.30 : 357,802.62 = 138,785.76 : x
  2. Step 2: Convert to fraction form
    238,929.30/357,802.62 = 138,785.76/x
  3. Step 3: Cross multiply
    238,929.30x = 357,802.62 × 138,785.76
  4. Step 4: Simplify right side
    238,929.30x = 49,657,908,546.69
  5. Step 5: Solve for x
    x = 49,657,908,546.69/238,929.30
  6. Step 6: Final answer
    x = 207,835.16

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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.