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Finding the Fourth Proportional to 287,064.60, 429,576.30 and 250,031.40

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Solution

The fourth proportional to 287,064.60, 429,576.30 and 250,031.40 is: 374,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,064.60 : 429,576.30 = 250,031.40 : x
  2. Step 2: Convert to fraction form
    287,064.60/429,576.30 = 250,031.40/x
  3. Step 3: Cross multiply
    287,064.60x = 429,576.30 × 250,031.40
  4. Step 4: Simplify right side
    287,064.60x = 107,407,563,695.82
  5. Step 5: Solve for x
    x = 107,407,563,695.82/287,064.60
  6. Step 6: Final answer
    x = 374,158.16

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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.