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Finding the Fourth Proportional to 405,332.40, 607,998.60 and 124,813.20

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Solution

The fourth proportional to 405,332.40, 607,998.60 and 124,813.20 is: 187,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,332.40 : 607,998.60 = 124,813.20 : x
  2. Step 2: Convert to fraction form
    405,332.40/607,998.60 = 124,813.20/x
  3. Step 3: Cross multiply
    405,332.40x = 607,998.60 × 124,813.20
  4. Step 4: Simplify right side
    405,332.40x = 75,886,250,861.52
  5. Step 5: Solve for x
    x = 75,886,250,861.52/405,332.40
  6. Step 6: Final answer
    x = 187,219.80

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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.