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Finding the Fourth Proportional to 288,362.64, 432,748.08 and 101,388.72

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Solution

The fourth proportional to 288,362.64, 432,748.08 and 101,388.72 is: 152,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,362.64 : 432,748.08 = 101,388.72 : x
  2. Step 2: Convert to fraction form
    288,362.64/432,748.08 = 101,388.72/x
  3. Step 3: Cross multiply
    288,362.64x = 432,748.08 × 101,388.72
  4. Step 4: Simplify right side
    288,362.64x = 43,875,773,913.66
  5. Step 5: Solve for x
    x = 43,875,773,913.66/288,362.64
  6. Step 6: Final answer
    x = 152,154.85

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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.