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Finding the Fourth Proportional to 290,657.20, 401,060.28 and 163,332.40

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Solution

The fourth proportional to 290,657.20, 401,060.28 and 163,332.40 is: 225,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,657.20 : 401,060.28 = 163,332.40 : x
  2. Step 2: Convert to fraction form
    290,657.20/401,060.28 = 163,332.40/x
  3. Step 3: Cross multiply
    290,657.20x = 401,060.28 × 163,332.40
  4. Step 4: Simplify right side
    290,657.20x = 65,506,138,077.07
  5. Step 5: Solve for x
    x = 65,506,138,077.07/290,657.20
  6. Step 6: Final answer
    x = 225,372.49

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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.