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Finding the Fourth Proportional to 288,045.60, 432,068.40 and 276,381.60

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Solution

The fourth proportional to 288,045.60, 432,068.40 and 276,381.60 is: 414,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,045.60 : 432,068.40 = 276,381.60 : x
  2. Step 2: Convert to fraction form
    288,045.60/432,068.40 = 276,381.60/x
  3. Step 3: Cross multiply
    288,045.60x = 432,068.40 × 276,381.60
  4. Step 4: Simplify right side
    288,045.60x = 119,415,755,701.44
  5. Step 5: Solve for x
    x = 119,415,755,701.44/288,045.60
  6. Step 6: Final answer
    x = 414,572.40

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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.