Home / 259,938,278.80-390,056,717.40-98,496,077.20

Finding the Fourth Proportional to 259,938,278.80, 390,056,717.40 and 98,496,077.20

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Solution

The fourth proportional to 259,938,278.80, 390,056,717.40 and 98,496,077.20 is: 147,800,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,938,278.80 : 390,056,717.40 = 98,496,077.20 : x
  2. Step 2: Convert to fraction form
    259,938,278.80/390,056,717.40 = 98,496,077.20/x
  3. Step 3: Cross multiply
    259,938,278.80x = 390,056,717.40 × 98,496,077.20
  4. Step 4: Simplify right side
    259,938,278.80x = 38,419,056,549,408,984
  5. Step 5: Solve for x
    x = 38,419,056,549,408,984/259,938,278.80
  6. Step 6: Final answer
    x = 147,800,688.40

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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.