Home / 287,014.28-430,528.50-137,270.39

Finding the Fourth Proportional to 287,014.28, 430,528.50 and 137,270.39

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Solution

The fourth proportional to 287,014.28, 430,528.50 and 137,270.39 is: 205,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,014.28 : 430,528.50 = 137,270.39 : x
  2. Step 2: Convert to fraction form
    287,014.28/430,528.50 = 137,270.39/x
  3. Step 3: Cross multiply
    287,014.28x = 430,528.50 × 137,270.39
  4. Step 4: Simplify right side
    287,014.28x = 59,098,812,948.47
  5. Step 5: Solve for x
    x = 59,098,812,948.47/287,014.28
  6. Step 6: Final answer
    x = 205,908.97

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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.