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Finding the Fourth Proportional to 291,717.60, 402,570.54 and 157,581.60

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Solution

The fourth proportional to 291,717.60, 402,570.54 and 157,581.60 is: 217,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,717.60 : 402,570.54 = 157,581.60 : x
  2. Step 2: Convert to fraction form
    291,717.60/402,570.54 = 157,581.60/x
  3. Step 3: Cross multiply
    291,717.60x = 402,570.54 × 157,581.60
  4. Step 4: Simplify right side
    291,717.60x = 63,437,709,806.06
  5. Step 5: Solve for x
    x = 63,437,709,806.06/291,717.60
  6. Step 6: Final answer
    x = 217,462.74

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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.