Home / 402,106.12-554,889.82-218,337.51

Finding the Fourth Proportional to 402,106.12, 554,889.82 and 218,337.51

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Solution

The fourth proportional to 402,106.12, 554,889.82 and 218,337.51 is: 301,296.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,106.12 : 554,889.82 = 218,337.51 : x
  2. Step 2: Convert to fraction form
    402,106.12/554,889.82 = 218,337.51/x
  3. Step 3: Cross multiply
    402,106.12x = 554,889.82 × 218,337.51
  4. Step 4: Simplify right side
    402,106.12x = 121,153,261,623.15
  5. Step 5: Solve for x
    x = 121,153,261,623.15/402,106.12
  6. Step 6: Final answer
    x = 301,296.74

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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.