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Finding the Fourth Proportional to 350,038.60, 524,712.30 and 172,400.20

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Solution

The fourth proportional to 350,038.60, 524,712.30 and 172,400.20 is: 258,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,038.60 : 524,712.30 = 172,400.20 : x
  2. Step 2: Convert to fraction form
    350,038.60/524,712.30 = 172,400.20/x
  3. Step 3: Cross multiply
    350,038.60x = 524,712.30 × 172,400.20
  4. Step 4: Simplify right side
    350,038.60x = 90,460,505,462.46
  5. Step 5: Solve for x
    x = 90,460,505,462.46/350,038.60
  6. Step 6: Final answer
    x = 258,430.09

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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.