Home / 402,079.07-554,878.77-218,325.45

Finding the Fourth Proportional to 402,079.07, 554,878.77 and 218,325.45

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Solution

The fourth proportional to 402,079.07, 554,878.77 and 218,325.45 is: 301,294.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,079.07 : 554,878.77 = 218,325.45 : x
  2. Step 2: Convert to fraction form
    402,079.07/554,878.77 = 218,325.45/x
  3. Step 3: Cross multiply
    402,079.07x = 554,878.77 × 218,325.45
  4. Step 4: Simplify right side
    402,079.07x = 121,144,157,155.70
  5. Step 5: Solve for x
    x = 121,144,157,155.70/402,079.07
  6. Step 6: Final answer
    x = 301,294.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.