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Finding the Fourth Proportional to 292,385.72, 403,492.25 and 158,249.72

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Solution

The fourth proportional to 292,385.72, 403,492.25 and 158,249.72 is: 218,384.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,385.72 : 403,492.25 = 158,249.72 : x
  2. Step 2: Convert to fraction form
    292,385.72/403,492.25 = 158,249.72/x
  3. Step 3: Cross multiply
    292,385.72x = 403,492.25 × 158,249.72
  4. Step 4: Simplify right side
    292,385.72x = 63,852,536,989.02
  5. Step 5: Solve for x
    x = 63,852,536,989.02/292,385.72
  6. Step 6: Final answer
    x = 218,384.59

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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.