Home / 378,075.18-521,738.06-216,926.62

Finding the Fourth Proportional to 378,075.18, 521,738.06 and 216,926.62

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Solution

The fourth proportional to 378,075.18, 521,738.06 and 216,926.62 is: 299,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,075.18 : 521,738.06 = 216,926.62 : x
  2. Step 2: Convert to fraction form
    378,075.18/521,738.06 = 216,926.62/x
  3. Step 3: Cross multiply
    378,075.18x = 521,738.06 × 216,926.62
  4. Step 4: Simplify right side
    378,075.18x = 113,178,873,881.16
  5. Step 5: Solve for x
    x = 113,178,873,881.16/378,075.18
  6. Step 6: Final answer
    x = 299,355.47

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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.