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Finding the Fourth Proportional to 243,574.34, 365,353.29 and 85,798.71

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Solution

The fourth proportional to 243,574.34, 365,353.29 and 85,798.71 is: 128,695.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,574.34 : 365,353.29 = 85,798.71 : x
  2. Step 2: Convert to fraction form
    243,574.34/365,353.29 = 85,798.71/x
  3. Step 3: Cross multiply
    243,574.34x = 365,353.29 × 85,798.71
  4. Step 4: Simplify right side
    243,574.34x = 31,346,840,976.26
  5. Step 5: Solve for x
    x = 31,346,840,976.26/243,574.34
  6. Step 6: Final answer
    x = 128,695.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.