Home / 315,219,787.20-472,829,680.80-194,287,435.20

Finding the Fourth Proportional to 315,219,787.20, 472,829,680.80 and 194,287,435.20

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Solution

The fourth proportional to 315,219,787.20, 472,829,680.80 and 194,287,435.20 is: 291,431,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,219,787.20 : 472,829,680.80 = 194,287,435.20 : x
  2. Step 2: Convert to fraction form
    315,219,787.20/472,829,680.80 = 194,287,435.20/x
  3. Step 3: Cross multiply
    315,219,787.20x = 472,829,680.80 × 194,287,435.20
  4. Step 4: Simplify right side
    315,219,787.20x = 91,864,865,969,066,688
  5. Step 5: Solve for x
    x = 91,864,865,969,066,688/315,219,787.20
  6. Step 6: Final answer
    x = 291,431,152.80

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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.