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Finding the Fourth Proportional to 291,802.76, 402,687.69 and 157,666.76

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Solution

The fourth proportional to 291,802.76, 402,687.69 and 157,666.76 is: 217,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,802.76 : 402,687.69 = 157,666.76 : x
  2. Step 2: Convert to fraction form
    291,802.76/402,687.69 = 157,666.76/x
  3. Step 3: Cross multiply
    291,802.76x = 402,687.69 × 157,666.76
  4. Step 4: Simplify right side
    291,802.76x = 63,490,463,374.18
  5. Step 5: Solve for x
    x = 63,490,463,374.18/291,802.76
  6. Step 6: Final answer
    x = 217,580.06

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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.