Home / 398,767,526.40-598,767,148.80-217,368,998.40

Finding the Fourth Proportional to 398,767,526.40, 598,767,148.80 and 217,368,998.40

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Solution

The fourth proportional to 398,767,526.40, 598,767,148.80 and 217,368,998.40 is: 326,389,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,767,526.40 : 598,767,148.80 = 217,368,998.40 : x
  2. Step 2: Convert to fraction form
    398,767,526.40/598,767,148.80 = 217,368,998.40/x
  3. Step 3: Cross multiply
    398,767,526.40x = 598,767,148.80 × 217,368,998.40
  4. Step 4: Simplify right side
    398,767,526.40x = 130,153,415,409,479,760
  5. Step 5: Solve for x
    x = 130,153,415,409,479,760/398,767,526.40
  6. Step 6: Final answer
    x = 326,389,203.72

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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.