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Finding the Fourth Proportional to 280,064.62, 386,484.51 and 152,732.62

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Solution

The fourth proportional to 280,064.62, 386,484.51 and 152,732.62 is: 210,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,064.62 : 386,484.51 = 152,732.62 : x
  2. Step 2: Convert to fraction form
    280,064.62/386,484.51 = 152,732.62/x
  3. Step 3: Cross multiply
    280,064.62x = 386,484.51 × 152,732.62
  4. Step 4: Simplify right side
    280,064.62x = 59,028,791,801.72
  5. Step 5: Solve for x
    x = 59,028,791,801.72/280,064.62
  6. Step 6: Final answer
    x = 210,768.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.