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Finding the Fourth Proportional to 288,612.60, 432,262.80 and 148,207.20

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Solution

The fourth proportional to 288,612.60, 432,262.80 and 148,207.20 is: 221,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,612.60 : 432,262.80 = 148,207.20 : x
  2. Step 2: Convert to fraction form
    288,612.60/432,262.80 = 148,207.20/x
  3. Step 3: Cross multiply
    288,612.60x = 432,262.80 × 148,207.20
  4. Step 4: Simplify right side
    288,612.60x = 64,064,459,252.16
  5. Step 5: Solve for x
    x = 64,064,459,252.16/288,612.60
  6. Step 6: Final answer
    x = 221,973.88

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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.