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Finding the Fourth Proportional to 292,117.59, 403,119.99 and 157,981.59

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Solution

The fourth proportional to 292,117.59, 403,119.99 and 157,981.59 is: 218,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,117.59 : 403,119.99 = 157,981.59 : x
  2. Step 2: Convert to fraction form
    292,117.59/403,119.99 = 157,981.59/x
  3. Step 3: Cross multiply
    292,117.59x = 403,119.99 × 157,981.59
  4. Step 4: Simplify right side
    292,117.59x = 63,685,536,980.98
  5. Step 5: Solve for x
    x = 63,685,536,980.98/292,117.59
  6. Step 6: Final answer
    x = 218,013.36

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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.