Home / 289,172,836.90-433,756,490.55-70,824,139.30

Finding the Fourth Proportional to 289,172,836.90, 433,756,490.55 and 70,824,139.30

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Solution

The fourth proportional to 289,172,836.90, 433,756,490.55 and 70,824,139.30 is: 106,235,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172,836.90 : 433,756,490.55 = 70,824,139.30 : x
  2. Step 2: Convert to fraction form
    289,172,836.90/433,756,490.55 = 70,824,139.30/x
  3. Step 3: Cross multiply
    289,172,836.90x = 433,756,490.55 × 70,824,139.30
  4. Step 4: Simplify right side
    289,172,836.90x = 30,720,430,108,992,332
  5. Step 5: Solve for x
    x = 30,720,430,108,992,332/289,172,836.90
  6. Step 6: Final answer
    x = 106,235,531.80

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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.