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Finding the Fourth Proportional to 390,197.49, 585,296.46 and 109,714.74

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Solution

The fourth proportional to 390,197.49, 585,296.46 and 109,714.74 is: 164,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,197.49 : 585,296.46 = 109,714.74 : x
  2. Step 2: Convert to fraction form
    390,197.49/585,296.46 = 109,714.74/x
  3. Step 3: Cross multiply
    390,197.49x = 585,296.46 × 109,714.74
  4. Step 4: Simplify right side
    390,197.49x = 64,215,648,931.82
  5. Step 5: Solve for x
    x = 64,215,648,931.82/390,197.49
  6. Step 6: Final answer
    x = 164,572.17

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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.