Home / 215,810.75-297,857.31-135,307.28

Finding the Fourth Proportional to 215,810.75, 297,857.31 and 135,307.28

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Solution

The fourth proportional to 215,810.75, 297,857.31 and 135,307.28 is: 186,748.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,810.75 : 297,857.31 = 135,307.28 : x
  2. Step 2: Convert to fraction form
    215,810.75/297,857.31 = 135,307.28/x
  3. Step 3: Cross multiply
    215,810.75x = 297,857.31 × 135,307.28
  4. Step 4: Simplify right side
    215,810.75x = 40,302,262,444.22
  5. Step 5: Solve for x
    x = 40,302,262,444.22/215,810.75
  6. Step 6: Final answer
    x = 186,748.17

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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.