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Finding the Fourth Proportional to 287,031.60, 429,526.80 and 249,998.40

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Solution

The fourth proportional to 287,031.60, 429,526.80 and 249,998.40 is: 374,108.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,031.60 : 429,526.80 = 249,998.40 : x
  2. Step 2: Convert to fraction form
    287,031.60/429,526.80 = 249,998.40/x
  3. Step 3: Cross multiply
    287,031.60x = 429,526.80 × 249,998.40
  4. Step 4: Simplify right side
    287,031.60x = 107,381,012,757.12
  5. Step 5: Solve for x
    x = 107,381,012,757.12/287,031.60
  6. Step 6: Final answer
    x = 374,108.68

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1.5x scale

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.