Home / 389,962.80-583,960.05-256,118.40

Finding the Fourth Proportional to 389,962.80, 583,960.05 and 256,118.40

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Solution

The fourth proportional to 389,962.80, 583,960.05 and 256,118.40 is: 383,531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,962.80 : 583,960.05 = 256,118.40 : x
  2. Step 2: Convert to fraction form
    389,962.80/583,960.05 = 256,118.40/x
  3. Step 3: Cross multiply
    389,962.80x = 583,960.05 × 256,118.40
  4. Step 4: Simplify right side
    389,962.80x = 149,562,913,669.92
  5. Step 5: Solve for x
    x = 149,562,913,669.92/389,962.80
  6. Step 6: Final answer
    x = 383,531.23

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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.