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Finding the Fourth Proportional to 291,628.52, 402,447.32 and 157,492.52

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Solution

The fourth proportional to 291,628.52, 402,447.32 and 157,492.52 is: 217,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,628.52 : 402,447.32 = 157,492.52 : x
  2. Step 2: Convert to fraction form
    291,628.52/402,447.32 = 157,492.52/x
  3. Step 3: Cross multiply
    291,628.52x = 402,447.32 × 157,492.52
  4. Step 4: Simplify right side
    291,628.52x = 63,382,442,594.05
  5. Step 5: Solve for x
    x = 63,382,442,594.05/291,628.52
  6. Step 6: Final answer
    x = 217,339.66

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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.