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Finding the Fourth Proportional to 315,153.10, 472,335.45 and 157,425.58

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Solution

The fourth proportional to 315,153.10, 472,335.45 and 157,425.58 is: 235,941.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,153.10 : 472,335.45 = 157,425.58 : x
  2. Step 2: Convert to fraction form
    315,153.10/472,335.45 = 157,425.58/x
  3. Step 3: Cross multiply
    315,153.10x = 472,335.45 × 157,425.58
  4. Step 4: Simplify right side
    315,153.10x = 74,357,682,170.81
  5. Step 5: Solve for x
    x = 74,357,682,170.81/315,153.10
  6. Step 6: Final answer
    x = 235,941.46

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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.