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Finding the Fourth Proportional to 316,225.02, 474,007.05 and 138,582.30

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Solution

The fourth proportional to 316,225.02, 474,007.05 and 138,582.30 is: 207,728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,225.02 : 474,007.05 = 138,582.30 : x
  2. Step 2: Convert to fraction form
    316,225.02/474,007.05 = 138,582.30/x
  3. Step 3: Cross multiply
    316,225.02x = 474,007.05 × 138,582.30
  4. Step 4: Simplify right side
    316,225.02x = 65,688,987,205.22
  5. Step 5: Solve for x
    x = 65,688,987,205.22/316,225.02
  6. Step 6: Final answer
    x = 207,728.62

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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.