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Finding the Fourth Proportional to 243,595.20, 365,385.12 and 144,434.88

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Solution

The fourth proportional to 243,595.20, 365,385.12 and 144,434.88 is: 216,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,595.20 : 365,385.12 = 144,434.88 : x
  2. Step 2: Convert to fraction form
    243,595.20/365,385.12 = 144,434.88/x
  3. Step 3: Cross multiply
    243,595.20x = 365,385.12 × 144,434.88
  4. Step 4: Simplify right side
    243,595.20x = 52,774,355,960.99
  5. Step 5: Solve for x
    x = 52,774,355,960.99/243,595.20
  6. Step 6: Final answer
    x = 216,647.77

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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.