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Finding the Fourth Proportional to 385,220.70, 577,831.05 and 291,908.70

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Solution

The fourth proportional to 385,220.70, 577,831.05 and 291,908.70 is: 437,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,220.70 : 577,831.05 = 291,908.70 : x
  2. Step 2: Convert to fraction form
    385,220.70/577,831.05 = 291,908.70/x
  3. Step 3: Cross multiply
    385,220.70x = 577,831.05 × 291,908.70
  4. Step 4: Simplify right side
    385,220.70x = 168,673,910,625.14
  5. Step 5: Solve for x
    x = 168,673,910,625.14/385,220.70
  6. Step 6: Final answer
    x = 437,863.05

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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.