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Finding the Fourth Proportional to 282,909.54, 390,415.23 and 155,593.74

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Solution

The fourth proportional to 282,909.54, 390,415.23 and 155,593.74 is: 214,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,909.54 : 390,415.23 = 155,593.74 : x
  2. Step 2: Convert to fraction form
    282,909.54/390,415.23 = 155,593.74/x
  3. Step 3: Cross multiply
    282,909.54x = 390,415.23 × 155,593.74
  4. Step 4: Simplify right side
    282,909.54x = 60,746,165,788.66
  5. Step 5: Solve for x
    x = 60,746,165,788.66/282,909.54
  6. Step 6: Final answer
    x = 214,719.40

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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.