Home / 280,038,983.40-419,386,628.70-136,263,853.80

Finding the Fourth Proportional to 280,038,983.40, 419,386,628.70 and 136,263,853.80

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Solution

The fourth proportional to 280,038,983.40, 419,386,628.70 and 136,263,853.80 is: 204,068,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,038,983.40 : 419,386,628.70 = 136,263,853.80 : x
  2. Step 2: Convert to fraction form
    280,038,983.40/419,386,628.70 = 136,263,853.80/x
  3. Step 3: Cross multiply
    280,038,983.40x = 419,386,628.70 × 136,263,853.80
  4. Step 4: Simplify right side
    280,038,983.40x = 57,147,238,258,851,688
  5. Step 5: Solve for x
    x = 57,147,238,258,851,688/280,038,983.40
  6. Step 6: Final answer
    x = 204,068,867.72

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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.