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Finding the Fourth Proportional to 292,626, 403,823.88 and 158,490

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Solution

The fourth proportional to 292,626, 403,823.88 and 158,490 is: 218,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,626 : 403,823.88 = 158,490 : x
  2. Step 2: Convert to fraction form
    292,626/403,823.88 = 158,490/x
  3. Step 3: Cross multiply
    292,626x = 403,823.88 × 158,490
  4. Step 4: Simplify right side
    292,626x = 64,002,046,741.20
  5. Step 5: Solve for x
    x = 64,002,046,741.20/292,626
  6. Step 6: Final answer
    x = 218,716.20

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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.