Home / 315,117.10-472,281.45-157,389.58

Finding the Fourth Proportional to 315,117.10, 472,281.45 and 157,389.58

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Solution

The fourth proportional to 315,117.10, 472,281.45 and 157,389.58 is: 235,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,117.10 : 472,281.45 = 157,389.58 : x
  2. Step 2: Convert to fraction form
    315,117.10/472,281.45 = 157,389.58/x
  3. Step 3: Cross multiply
    315,117.10x = 472,281.45 × 157,389.58
  4. Step 4: Simplify right side
    315,117.10x = 74,332,179,057.29
  5. Step 5: Solve for x
    x = 74,332,179,057.29/315,117.10
  6. Step 6: Final answer
    x = 235,887.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.