Home / 208,918,590-288,003,793.68-145,999,346.40

Finding the Fourth Proportional to 208,918,590, 288,003,793.68 and 145,999,346.40

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Solution

The fourth proportional to 208,918,590, 288,003,793.68 and 145,999,346.40 is: 201,266,750.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,918,590 : 288,003,793.68 = 145,999,346.40 : x
  2. Step 2: Convert to fraction form
    208,918,590/288,003,793.68 = 145,999,346.40/x
  3. Step 3: Cross multiply
    208,918,590x = 288,003,793.68 × 145,999,346.40
  4. Step 4: Simplify right side
    208,918,590x = 42,048,365,638,000,456
  5. Step 5: Solve for x
    x = 42,048,365,638,000,456/208,918,590
  6. Step 6: Final answer
    x = 201,266,750.07

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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.