Home / 288,586,458.88-398,238,640-156,424,617.76

Finding the Fourth Proportional to 288,586,458.88, 398,238,640 and 156,424,617.76

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Solution

The fourth proportional to 288,586,458.88, 398,238,640 and 156,424,617.76 is: 215,860,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,586,458.88 : 398,238,640 = 156,424,617.76 : x
  2. Step 2: Convert to fraction form
    288,586,458.88/398,238,640 = 156,424,617.76/x
  3. Step 3: Cross multiply
    288,586,458.88x = 398,238,640 × 156,424,617.76
  4. Step 4: Simplify right side
    288,586,458.88x = 62,294,327,039,262,240
  5. Step 5: Solve for x
    x = 62,294,327,039,262,240/288,586,458.88
  6. Step 6: Final answer
    x = 215,860,187.21

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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.