Home / 280,173,530.40-420,260,295.60-98,420,708.40

Finding the Fourth Proportional to 280,173,530.40, 420,260,295.60 and 98,420,708.40

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Solution

The fourth proportional to 280,173,530.40, 420,260,295.60 and 98,420,708.40 is: 147,631,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,173,530.40 : 420,260,295.60 = 98,420,708.40 : x
  2. Step 2: Convert to fraction form
    280,173,530.40/420,260,295.60 = 98,420,708.40/x
  3. Step 3: Cross multiply
    280,173,530.40x = 420,260,295.60 × 98,420,708.40
  4. Step 4: Simplify right side
    280,173,530.40x = 41,362,316,005,345,408
  5. Step 5: Solve for x
    x = 41,362,316,005,345,408/280,173,530.40
  6. Step 6: Final answer
    x = 147,631,062.60

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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.