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Finding the Fourth Proportional to 447,641.48, 617,726.21 and 243,688.13

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Solution

The fourth proportional to 447,641.48, 617,726.21 and 243,688.13 is: 336,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,641.48 : 617,726.21 = 243,688.13 : x
  2. Step 2: Convert to fraction form
    447,641.48/617,726.21 = 243,688.13/x
  3. Step 3: Cross multiply
    447,641.48x = 617,726.21 × 243,688.13
  4. Step 4: Simplify right side
    447,641.48x = 150,532,540,659.82
  5. Step 5: Solve for x
    x = 150,532,540,659.82/447,641.48
  6. Step 6: Final answer
    x = 336,279.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.