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Finding the Fourth Proportional to 315,230.40, 472,762.40 and 157,342.40

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Solution

The fourth proportional to 315,230.40, 472,762.40 and 157,342.40 is: 235,972.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,230.40 : 472,762.40 = 157,342.40 : x
  2. Step 2: Convert to fraction form
    315,230.40/472,762.40 = 157,342.40/x
  3. Step 3: Cross multiply
    315,230.40x = 472,762.40 × 157,342.40
  4. Step 4: Simplify right side
    315,230.40x = 74,385,570,645.76
  5. Step 5: Solve for x
    x = 74,385,570,645.76/315,230.40
  6. Step 6: Final answer
    x = 235,972.07

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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.