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Finding the Fourth Proportional to 390,681.60, 584,423.72 and 295,202.04

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Solution

The fourth proportional to 390,681.60, 584,423.72 and 295,202.04 is: 441,595.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,681.60 : 584,423.72 = 295,202.04 : x
  2. Step 2: Convert to fraction form
    390,681.60/584,423.72 = 295,202.04/x
  3. Step 3: Cross multiply
    390,681.60x = 584,423.72 × 295,202.04
  4. Step 4: Simplify right side
    390,681.60x = 172,523,074,368.39
  5. Step 5: Solve for x
    x = 172,523,074,368.39/390,681.60
  6. Step 6: Final answer
    x = 441,595.09

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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.