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Finding the Fourth Proportional to 279,159.30, 385,220.88 and 151,832.16

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Solution

The fourth proportional to 279,159.30, 385,220.88 and 151,832.16 is: 209,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,159.30 : 385,220.88 = 151,832.16 : x
  2. Step 2: Convert to fraction form
    279,159.30/385,220.88 = 151,832.16/x
  3. Step 3: Cross multiply
    279,159.30x = 385,220.88 × 151,832.16
  4. Step 4: Simplify right side
    279,159.30x = 58,488,918,287.50
  5. Step 5: Solve for x
    x = 58,488,918,287.50/279,159.30
  6. Step 6: Final answer
    x = 209,518.07

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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.