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Finding the Fourth Proportional to 326,681.48, 490,038.96 and 90,018.92

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Solution

The fourth proportional to 326,681.48, 490,038.96 and 90,018.92 is: 135,032.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,681.48 : 490,038.96 = 90,018.92 : x
  2. Step 2: Convert to fraction form
    326,681.48/490,038.96 = 90,018.92/x
  3. Step 3: Cross multiply
    326,681.48x = 490,038.96 × 90,018.92
  4. Step 4: Simplify right side
    326,681.48x = 44,112,777,937.12
  5. Step 5: Solve for x
    x = 44,112,777,937.12/326,681.48
  6. Step 6: Final answer
    x = 135,032.99

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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.