Home / 280,015,176.40-420,019,999.80-88,538,952.40

Finding the Fourth Proportional to 280,015,176.40, 420,019,999.80 and 88,538,952.40

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Solution

The fourth proportional to 280,015,176.40, 420,019,999.80 and 88,538,952.40 is: 132,807,554.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,015,176.40 : 420,019,999.80 = 88,538,952.40 : x
  2. Step 2: Convert to fraction form
    280,015,176.40/420,019,999.80 = 88,538,952.40/x
  3. Step 3: Cross multiply
    280,015,176.40x = 420,019,999.80 × 88,538,952.40
  4. Step 4: Simplify right side
    280,015,176.40x = 37,188,130,769,340,216
  5. Step 5: Solve for x
    x = 37,188,130,769,340,216/280,015,176.40
  6. Step 6: Final answer
    x = 132,807,554.39

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1.5x scale

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.