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Finding the Fourth Proportional to 240,603,391.90, 360,905,087.85 and 87,254,451.10

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Solution

The fourth proportional to 240,603,391.90, 360,905,087.85 and 87,254,451.10 is: 130,881,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,603,391.90 : 360,905,087.85 = 87,254,451.10 : x
  2. Step 2: Convert to fraction form
    240,603,391.90/360,905,087.85 = 87,254,451.10/x
  3. Step 3: Cross multiply
    240,603,391.90x = 360,905,087.85 × 87,254,451.10
  4. Step 4: Simplify right side
    240,603,391.90x = 31,490,575,339,549,028
  5. Step 5: Solve for x
    x = 31,490,575,339,549,028/240,603,391.90
  6. Step 6: Final answer
    x = 130,881,676.65

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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.