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Finding the Fourth Proportional to 304,868.60, 457,302.90 and 272,209.40

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Solution

The fourth proportional to 304,868.60, 457,302.90 and 272,209.40 is: 408,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,868.60 : 457,302.90 = 272,209.40 : x
  2. Step 2: Convert to fraction form
    304,868.60/457,302.90 = 272,209.40/x
  3. Step 3: Cross multiply
    304,868.60x = 457,302.90 × 272,209.40
  4. Step 4: Simplify right side
    304,868.60x = 124,482,148,027.26
  5. Step 5: Solve for x
    x = 124,482,148,027.26/304,868.60
  6. Step 6: Final answer
    x = 408,314.10

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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.