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Finding the Fourth Proportional to 288,037.80, 432,056.70 and 260,044.20

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Solution

The fourth proportional to 288,037.80, 432,056.70 and 260,044.20 is: 390,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,037.80 : 432,056.70 = 260,044.20 : x
  2. Step 2: Convert to fraction form
    288,037.80/432,056.70 = 260,044.20/x
  3. Step 3: Cross multiply
    288,037.80x = 432,056.70 × 260,044.20
  4. Step 4: Simplify right side
    288,037.80x = 112,353,838,906.14
  5. Step 5: Solve for x
    x = 112,353,838,906.14/288,037.80
  6. Step 6: Final answer
    x = 390,066.30

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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.