Home / 280,853,124.90-421,280,999.55-99,100,302.90

Finding the Fourth Proportional to 280,853,124.90, 421,280,999.55 and 99,100,302.90

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Solution

The fourth proportional to 280,853,124.90, 421,280,999.55 and 99,100,302.90 is: 148,650,917.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,853,124.90 : 421,280,999.55 = 99,100,302.90 : x
  2. Step 2: Convert to fraction form
    280,853,124.90/421,280,999.55 = 99,100,302.90/x
  3. Step 3: Cross multiply
    280,853,124.90x = 421,280,999.55 × 99,100,302.90
  4. Step 4: Simplify right side
    280,853,124.90x = 41,749,074,661,419,768
  5. Step 5: Solve for x
    x = 41,749,074,661,419,768/280,853,124.90
  6. Step 6: Final answer
    x = 148,650,917.37

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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.