Home / 280,173,561.40-420,260,342.10-98,420,739.40

Finding the Fourth Proportional to 280,173,561.40, 420,260,342.10 and 98,420,739.40

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Solution

The fourth proportional to 280,173,561.40, 420,260,342.10 and 98,420,739.40 is: 147,631,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,173,561.40 : 420,260,342.10 = 98,420,739.40 : x
  2. Step 2: Convert to fraction form
    280,173,561.40/420,260,342.10 = 98,420,739.40/x
  3. Step 3: Cross multiply
    280,173,561.40x = 420,260,342.10 × 98,420,739.40
  4. Step 4: Simplify right side
    280,173,561.40x = 41,362,333,609,978,952
  5. Step 5: Solve for x
    x = 41,362,333,609,978,952/280,173,561.40
  6. Step 6: Final answer
    x = 147,631,109.10

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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.