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Finding the Fourth Proportional to 292,455.40, 403,589.74 and 158,319.40

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Solution

The fourth proportional to 292,455.40, 403,589.74 and 158,319.40 is: 218,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,455.40 : 403,589.74 = 158,319.40 : x
  2. Step 2: Convert to fraction form
    292,455.40/403,589.74 = 158,319.40/x
  3. Step 3: Cross multiply
    292,455.40x = 403,589.74 × 158,319.40
  4. Step 4: Simplify right side
    292,455.40x = 63,896,085,482.96
  5. Step 5: Solve for x
    x = 63,896,085,482.96/292,455.40
  6. Step 6: Final answer
    x = 218,481.47

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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.