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Finding the Fourth Proportional to 390,088.17, 585,598.82 and 232,390.89

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Solution

The fourth proportional to 390,088.17, 585,598.82 and 232,390.89 is: 348,864.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,088.17 : 585,598.82 = 232,390.89 : x
  2. Step 2: Convert to fraction form
    390,088.17/585,598.82 = 232,390.89/x
  3. Step 3: Cross multiply
    390,088.17x = 585,598.82 × 232,390.89
  4. Step 4: Simplify right side
    390,088.17x = 136,087,829,800.80
  5. Step 5: Solve for x
    x = 136,087,829,800.80/390,088.17
  6. Step 6: Final answer
    x = 348,864.28

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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.