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Finding the Fourth Proportional to 387,674.17, 535,015.43 and 224,363.59

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Solution

The fourth proportional to 387,674.17, 535,015.43 and 224,363.59 is: 309,636.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,674.17 : 535,015.43 = 224,363.59 : x
  2. Step 2: Convert to fraction form
    387,674.17/535,015.43 = 224,363.59/x
  3. Step 3: Cross multiply
    387,674.17x = 535,015.43 × 224,363.59
  4. Step 4: Simplify right side
    387,674.17x = 120,037,980,962.20
  5. Step 5: Solve for x
    x = 120,037,980,962.20/387,674.17
  6. Step 6: Final answer
    x = 309,636.26

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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.