Home / 811,182.95-1,216,681.48-212,201.93

Finding the Fourth Proportional to 811,182.95, 1,216,681.48 and 212,201.93

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Solution

The fourth proportional to 811,182.95, 1,216,681.48 and 212,201.93 is: 318,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,182.95 : 1,216,681.48 = 212,201.93 : x
  2. Step 2: Convert to fraction form
    811,182.95/1,216,681.48 = 212,201.93/x
  3. Step 3: Cross multiply
    811,182.95x = 1,216,681.48 × 212,201.93
  4. Step 4: Simplify right side
    811,182.95x = 258,182,152,167.85
  5. Step 5: Solve for x
    x = 258,182,152,167.85/811,182.95
  6. Step 6: Final answer
    x = 318,278.57

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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.