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Finding the Fourth Proportional to 387,114.68, 534,083.34 and 243,887.48

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Solution

The fourth proportional to 387,114.68, 534,083.34 and 243,887.48 is: 336,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,114.68 : 534,083.34 = 243,887.48 : x
  2. Step 2: Convert to fraction form
    387,114.68/534,083.34 = 243,887.48/x
  3. Step 3: Cross multiply
    387,114.68x = 534,083.34 × 243,887.48
  4. Step 4: Simplify right side
    387,114.68x = 130,256,239,902.58
  5. Step 5: Solve for x
    x = 130,256,239,902.58/387,114.68
  6. Step 6: Final answer
    x = 336,479.72

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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.