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Finding the Fourth Proportional to 401,745.79, 554,407.68 and 220,460.77

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Solution

The fourth proportional to 401,745.79, 554,407.68 and 220,460.77 is: 304,235.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,745.79 : 554,407.68 = 220,460.77 : x
  2. Step 2: Convert to fraction form
    401,745.79/554,407.68 = 220,460.77/x
  3. Step 3: Cross multiply
    401,745.79x = 554,407.68 × 220,460.77
  4. Step 4: Simplify right side
    401,745.79x = 122,225,144,026.71
  5. Step 5: Solve for x
    x = 122,225,144,026.71/401,745.79
  6. Step 6: Final answer
    x = 304,235.03

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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.