Home / 285,437,718.96-428,120,055.52-91,332,895.92

Finding the Fourth Proportional to 285,437,718.96, 428,120,055.52 and 91,332,895.92

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Solution

The fourth proportional to 285,437,718.96, 428,120,055.52 and 91,332,895.92 is: 136,987,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,437,718.96 : 428,120,055.52 = 91,332,895.92 : x
  2. Step 2: Convert to fraction form
    285,437,718.96/428,120,055.52 = 91,332,895.92/x
  3. Step 3: Cross multiply
    285,437,718.96x = 428,120,055.52 × 91,332,895.92
  4. Step 4: Simplify right side
    285,437,718.96x = 39,101,444,472,072,784
  5. Step 5: Solve for x
    x = 39,101,444,472,072,784/285,437,718.96
  6. Step 6: Final answer
    x = 136,987,657.46

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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.