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Finding the Fourth Proportional to 307,038.55, 423,744.40 and 171,094.63

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Solution

The fourth proportional to 307,038.55, 423,744.40 and 171,094.63 is: 236,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,038.55 : 423,744.40 = 171,094.63 : x
  2. Step 2: Convert to fraction form
    307,038.55/423,744.40 = 171,094.63/x
  3. Step 3: Cross multiply
    307,038.55x = 423,744.40 × 171,094.63
  4. Step 4: Simplify right side
    307,038.55x = 72,500,391,332.57
  5. Step 5: Solve for x
    x = 72,500,391,332.57/307,038.55
  6. Step 6: Final answer
    x = 236,127.98

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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.