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Finding the Fourth Proportional to 256,547.52, 353,995.92 and 143,348.40

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Solution

The fourth proportional to 256,547.52, 353,995.92 and 143,348.40 is: 197,798.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,547.52 : 353,995.92 = 143,348.40 : x
  2. Step 2: Convert to fraction form
    256,547.52/353,995.92 = 143,348.40/x
  3. Step 3: Cross multiply
    256,547.52x = 353,995.92 × 143,348.40
  4. Step 4: Simplify right side
    256,547.52x = 50,744,748,738.53
  5. Step 5: Solve for x
    x = 50,744,748,738.53/256,547.52
  6. Step 6: Final answer
    x = 197,798.63

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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.