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Finding the Fourth Proportional to 338,892.64, 508,340.88 and 89,572

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Solution

The fourth proportional to 338,892.64, 508,340.88 and 89,572 is: 134,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,892.64 : 508,340.88 = 89,572 : x
  2. Step 2: Convert to fraction form
    338,892.64/508,340.88 = 89,572/x
  3. Step 3: Cross multiply
    338,892.64x = 508,340.88 × 89,572
  4. Step 4: Simplify right side
    338,892.64x = 45,533,109,303.36
  5. Step 5: Solve for x
    x = 45,533,109,303.36/338,892.64
  6. Step 6: Final answer
    x = 134,358.51

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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.