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Finding the Fourth Proportional to 291,956.65, 402,900.29 and 157,820.65

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Solution

The fourth proportional to 291,956.65, 402,900.29 and 157,820.65 is: 217,792.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,956.65 : 402,900.29 = 157,820.65 : x
  2. Step 2: Convert to fraction form
    291,956.65/402,900.29 = 157,820.65/x
  3. Step 3: Cross multiply
    291,956.65x = 402,900.29 × 157,820.65
  4. Step 4: Simplify right side
    291,956.65x = 63,585,985,652.99
  5. Step 5: Solve for x
    x = 63,585,985,652.99/291,956.65
  6. Step 6: Final answer
    x = 217,792.56

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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.