Home / 280,303,670.80-420,455,506.20-75,831,746.05

Finding the Fourth Proportional to 280,303,670.80, 420,455,506.20 and 75,831,746.05

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Solution

The fourth proportional to 280,303,670.80, 420,455,506.20 and 75,831,746.05 is: 113,747,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,303,670.80 : 420,455,506.20 = 75,831,746.05 : x
  2. Step 2: Convert to fraction form
    280,303,670.80/420,455,506.20 = 75,831,746.05/x
  3. Step 3: Cross multiply
    280,303,670.80x = 420,455,506.20 × 75,831,746.05
  4. Step 4: Simplify right side
    280,303,670.80x = 31,883,875,171,482,600
  5. Step 5: Solve for x
    x = 31,883,875,171,482,600/280,303,670.80
  6. Step 6: Final answer
    x = 113,747,619.08

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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.