Home / 411,320.79-616,979.95-145,017.09

Finding the Fourth Proportional to 411,320.79, 616,979.95 and 145,017.09

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Solution

The fourth proportional to 411,320.79, 616,979.95 and 145,017.09 is: 217,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,320.79 : 616,979.95 = 145,017.09 : x
  2. Step 2: Convert to fraction form
    411,320.79/616,979.95 = 145,017.09/x
  3. Step 3: Cross multiply
    411,320.79x = 616,979.95 × 145,017.09
  4. Step 4: Simplify right side
    411,320.79x = 89,472,636,937.35
  5. Step 5: Solve for x
    x = 89,472,636,937.35/411,320.79
  6. Step 6: Final answer
    x = 217,525.20

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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.