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Finding the Fourth Proportional to 286,666.61, 395,600.18 and 157,607.28

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Solution

The fourth proportional to 286,666.61, 395,600.18 and 157,607.28 is: 217,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,666.61 : 395,600.18 = 157,607.28 : x
  2. Step 2: Convert to fraction form
    286,666.61/395,600.18 = 157,607.28/x
  3. Step 3: Cross multiply
    286,666.61x = 395,600.18 × 157,607.28
  4. Step 4: Simplify right side
    286,666.61x = 62,349,467,549.27
  5. Step 5: Solve for x
    x = 62,349,467,549.27/286,666.61
  6. Step 6: Final answer
    x = 217,498.19

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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.