Home / 401,121.76-553,799.64-258,130.24

Finding the Fourth Proportional to 401,121.76, 553,799.64 and 258,130.24

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Solution

The fourth proportional to 401,121.76, 553,799.64 and 258,130.24 is: 356,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,121.76 : 553,799.64 = 258,130.24 : x
  2. Step 2: Convert to fraction form
    401,121.76/553,799.64 = 258,130.24/x
  3. Step 3: Cross multiply
    401,121.76x = 553,799.64 × 258,130.24
  4. Step 4: Simplify right side
    401,121.76x = 142,952,433,985.11
  5. Step 5: Solve for x
    x = 142,952,433,985.11/401,121.76
  6. Step 6: Final answer
    x = 356,381.65

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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.