Home / 219,310,981.65-328,966,472.49-90,011,386.35

Finding the Fourth Proportional to 219,310,981.65, 328,966,472.49 and 90,011,386.35

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Solution

The fourth proportional to 219,310,981.65, 328,966,472.49 and 90,011,386.35 is: 135,017,079.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,310,981.65 : 328,966,472.49 = 90,011,386.35 : x
  2. Step 2: Convert to fraction form
    219,310,981.65/328,966,472.49 = 90,011,386.35/x
  3. Step 3: Cross multiply
    219,310,981.65x = 328,966,472.49 × 90,011,386.35
  4. Step 4: Simplify right side
    219,310,981.65x = 29,610,728,251,494,036
  5. Step 5: Solve for x
    x = 29,610,728,251,494,036/219,310,981.65
  6. Step 6: Final answer
    x = 135,017,079.53

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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.