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Finding the Fourth Proportional to 243,299.16, 364,909.08 and 85,490.76

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Solution

The fourth proportional to 243,299.16, 364,909.08 and 85,490.76 is: 128,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,299.16 : 364,909.08 = 85,490.76 : x
  2. Step 2: Convert to fraction form
    243,299.16/364,909.08 = 85,490.76/x
  3. Step 3: Cross multiply
    243,299.16x = 364,909.08 × 85,490.76
  4. Step 4: Simplify right side
    243,299.16x = 31,196,354,580.10
  5. Step 5: Solve for x
    x = 31,196,354,580.10/243,299.16
  6. Step 6: Final answer
    x = 128,222.20

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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.