Home / 385,441,642.00-531,910,140.71-209,229,756.74

Finding the Fourth Proportional to 385,441,642.00, 531,910,140.71 and 209,229,756.74

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Solution

The fourth proportional to 385,441,642.00, 531,910,140.71 and 209,229,756.74 is: 288,737,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,642.00 : 531,910,140.71 = 209,229,756.74 : x
  2. Step 2: Convert to fraction form
    385,441,642.00/531,910,140.71 = 209,229,756.74/x
  3. Step 3: Cross multiply
    385,441,642.00x = 531,910,140.71 × 209,229,756.74
  4. Step 4: Simplify right side
    385,441,642.00x = 111,291,429,344,586,768
  5. Step 5: Solve for x
    x = 111,291,429,344,586,768/385,441,642.00
  6. Step 6: Final answer
    x = 288,737,430.57

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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.