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Finding the Fourth Proportional to 318,701.20, 478,051.80 and 176,983.60

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Solution

The fourth proportional to 318,701.20, 478,051.80 and 176,983.60 is: 265,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,701.20 : 478,051.80 = 176,983.60 : x
  2. Step 2: Convert to fraction form
    318,701.20/478,051.80 = 176,983.60/x
  3. Step 3: Cross multiply
    318,701.20x = 478,051.80 × 176,983.60
  4. Step 4: Simplify right side
    318,701.20x = 84,607,328,550.48
  5. Step 5: Solve for x
    x = 84,607,328,550.48/318,701.20
  6. Step 6: Final answer
    x = 265,475.40

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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.