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Finding the Fourth Proportional to 290,000.76, 400,207.14 and 162,685.32

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Solution

The fourth proportional to 290,000.76, 400,207.14 and 162,685.32 is: 224,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,000.76 : 400,207.14 = 162,685.32 : x
  2. Step 2: Convert to fraction form
    290,000.76/400,207.14 = 162,685.32/x
  3. Step 3: Cross multiply
    290,000.76x = 400,207.14 × 162,685.32
  4. Step 4: Simplify right side
    290,000.76x = 65,107,826,637.18
  5. Step 5: Solve for x
    x = 65,107,826,637.18/290,000.76
  6. Step 6: Final answer
    x = 224,509.16

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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.