Home / 280,031,332.40-420,046,998.60-75,559,079.60

Finding the Fourth Proportional to 280,031,332.40, 420,046,998.60 and 75,559,079.60

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Solution

The fourth proportional to 280,031,332.40, 420,046,998.60 and 75,559,079.60 is: 113,338,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,031,332.40 : 420,046,998.60 = 75,559,079.60 : x
  2. Step 2: Convert to fraction form
    280,031,332.40/420,046,998.60 = 75,559,079.60/x
  3. Step 3: Cross multiply
    280,031,332.40x = 420,046,998.60 × 75,559,079.60
  4. Step 4: Simplify right side
    280,031,332.40x = 31,738,364,602,958,488
  5. Step 5: Solve for x
    x = 31,738,364,602,958,488/280,031,332.40
  6. Step 6: Final answer
    x = 113,338,619.40

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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.