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Finding the Fourth Proportional to 553,398.90, 830,487.15 and 238,082.10

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Solution

The fourth proportional to 553,398.90, 830,487.15 and 238,082.10 is: 357,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,398.90 : 830,487.15 = 238,082.10 : x
  2. Step 2: Convert to fraction form
    553,398.90/830,487.15 = 238,082.10/x
  3. Step 3: Cross multiply
    553,398.90x = 830,487.15 × 238,082.10
  4. Step 4: Simplify right side
    553,398.90x = 197,724,124,695.02
  5. Step 5: Solve for x
    x = 197,724,124,695.02/553,398.90
  6. Step 6: Final answer
    x = 357,290.42

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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.