Home / 291,623.16-402,439.96-157,487.16

Finding the Fourth Proportional to 291,623.16, 402,439.96 and 157,487.16

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Solution

The fourth proportional to 291,623.16, 402,439.96 and 157,487.16 is: 217,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,623.16 : 402,439.96 = 157,487.16 : x
  2. Step 2: Convert to fraction form
    291,623.16/402,439.96 = 157,487.16/x
  3. Step 3: Cross multiply
    291,623.16x = 402,439.96 × 157,487.16
  4. Step 4: Simplify right side
    291,623.16x = 63,379,125,977.20
  5. Step 5: Solve for x
    x = 63,379,125,977.20/291,623.16
  6. Step 6: Final answer
    x = 217,332.28

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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.