Home / 389,264.40-583,896.60-212,117.40

Finding the Fourth Proportional to 389,264.40, 583,896.60 and 212,117.40

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Solution

The fourth proportional to 389,264.40, 583,896.60 and 212,117.40 is: 318,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,264.40 : 583,896.60 = 212,117.40 : x
  2. Step 2: Convert to fraction form
    389,264.40/583,896.60 = 212,117.40/x
  3. Step 3: Cross multiply
    389,264.40x = 583,896.60 × 212,117.40
  4. Step 4: Simplify right side
    389,264.40x = 123,854,628,660.84
  5. Step 5: Solve for x
    x = 123,854,628,660.84/389,264.40
  6. Step 6: Final answer
    x = 318,176.10

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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.