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Finding the Fourth Proportional to 287,715.70, 432,027.15 and 169,477.30

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Solution

The fourth proportional to 287,715.70, 432,027.15 and 169,477.30 is: 254,483.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,715.70 : 432,027.15 = 169,477.30 : x
  2. Step 2: Convert to fraction form
    287,715.70/432,027.15 = 169,477.30/x
  3. Step 3: Cross multiply
    287,715.70x = 432,027.15 × 169,477.30
  4. Step 4: Simplify right side
    287,715.70x = 73,218,794,908.70
  5. Step 5: Solve for x
    x = 73,218,794,908.70/287,715.70
  6. Step 6: Final answer
    x = 254,483.14

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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.