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Finding the Fourth Proportional to 538,420.40, 807,484.80 and 159,340.40

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Solution

The fourth proportional to 538,420.40, 807,484.80 and 159,340.40 is: 238,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,420.40 : 807,484.80 = 159,340.40 : x
  2. Step 2: Convert to fraction form
    538,420.40/807,484.80 = 159,340.40/x
  3. Step 3: Cross multiply
    538,420.40x = 807,484.80 × 159,340.40
  4. Step 4: Simplify right side
    538,420.40x = 128,664,951,025.92
  5. Step 5: Solve for x
    x = 128,664,951,025.92/538,420.40
  6. Step 6: Final answer
    x = 238,967.45

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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.