Home / 287,890.08-431,911.69-98,350.17

Finding the Fourth Proportional to 287,890.08, 431,911.69 and 98,350.17

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Solution

The fourth proportional to 287,890.08, 431,911.69 and 98,350.17 is: 147,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,890.08 : 431,911.69 = 98,350.17 : x
  2. Step 2: Convert to fraction form
    287,890.08/431,911.69 = 98,350.17/x
  3. Step 3: Cross multiply
    287,890.08x = 431,911.69 × 98,350.17
  4. Step 4: Simplify right side
    287,890.08x = 42,478,586,824.16
  5. Step 5: Solve for x
    x = 42,478,586,824.16/287,890.08
  6. Step 6: Final answer
    x = 147,551.41

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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.