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Finding the Fourth Proportional to 315,315.20, 472,972.80 and 93,699.20

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Solution

The fourth proportional to 315,315.20, 472,972.80 and 93,699.20 is: 140,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,315.20 : 472,972.80 = 93,699.20 : x
  2. Step 2: Convert to fraction form
    315,315.20/472,972.80 = 93,699.20/x
  3. Step 3: Cross multiply
    315,315.20x = 472,972.80 × 93,699.20
  4. Step 4: Simplify right side
    315,315.20x = 44,317,172,981.76
  5. Step 5: Solve for x
    x = 44,317,172,981.76/315,315.20
  6. Step 6: Final answer
    x = 140,548.80

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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.