Home / 291,966.10-402,913.05-157,830.10

Finding the Fourth Proportional to 291,966.10, 402,913.05 and 157,830.10

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Solution

The fourth proportional to 291,966.10, 402,913.05 and 157,830.10 is: 217,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,966.10 : 402,913.05 = 157,830.10 : x
  2. Step 2: Convert to fraction form
    291,966.10/402,913.05 = 157,830.10/x
  3. Step 3: Cross multiply
    291,966.10x = 402,913.05 × 157,830.10
  4. Step 4: Simplify right side
    291,966.10x = 63,591,806,972.81
  5. Step 5: Solve for x
    x = 63,591,806,972.81/291,966.10
  6. Step 6: Final answer
    x = 217,805.45

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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.