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Finding the Fourth Proportional to 455,527.20, 683,323.20 and 139,983.60

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Solution

The fourth proportional to 455,527.20, 683,323.20 and 139,983.60 is: 209,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,527.20 : 683,323.20 = 139,983.60 : x
  2. Step 2: Convert to fraction form
    455,527.20/683,323.20 = 139,983.60/x
  3. Step 3: Cross multiply
    455,527.20x = 683,323.20 × 139,983.60
  4. Step 4: Simplify right side
    455,527.20x = 95,654,041,499.52
  5. Step 5: Solve for x
    x = 95,654,041,499.52/455,527.20
  6. Step 6: Final answer
    x = 209,985.36

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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.