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Finding the Fourth Proportional to 279,354.87, 385,497.77 and 152,030.16

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Solution

The fourth proportional to 279,354.87, 385,497.77 and 152,030.16 is: 209,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,354.87 : 385,497.77 = 152,030.16 : x
  2. Step 2: Convert to fraction form
    279,354.87/385,497.77 = 152,030.16/x
  3. Step 3: Cross multiply
    279,354.87x = 385,497.77 × 152,030.16
  4. Step 4: Simplify right side
    279,354.87x = 58,607,286,892.59
  5. Step 5: Solve for x
    x = 58,607,286,892.59/279,354.87
  6. Step 6: Final answer
    x = 209,795.11

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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.