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Finding the Fourth Proportional to 402,693.28, 555,728.40 and 232,980.64

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Solution

The fourth proportional to 402,693.28, 555,728.40 and 232,980.64 is: 321,520.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,693.28 : 555,728.40 = 232,980.64 : x
  2. Step 2: Convert to fraction form
    402,693.28/555,728.40 = 232,980.64/x
  3. Step 3: Cross multiply
    402,693.28x = 555,728.40 × 232,980.64
  4. Step 4: Simplify right side
    402,693.28x = 129,473,958,298.18
  5. Step 5: Solve for x
    x = 129,473,958,298.18/402,693.28
  6. Step 6: Final answer
    x = 321,520.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.