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Finding the Fourth Proportional to 307,430.14, 424,256.08 and 171,459.58

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Solution

The fourth proportional to 307,430.14, 424,256.08 and 171,459.58 is: 236,615.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,430.14 : 424,256.08 = 171,459.58 : x
  2. Step 2: Convert to fraction form
    307,430.14/424,256.08 = 171,459.58/x
  3. Step 3: Cross multiply
    307,430.14x = 424,256.08 × 171,459.58
  4. Step 4: Simplify right side
    307,430.14x = 72,742,769,289.25
  5. Step 5: Solve for x
    x = 72,742,769,289.25/307,430.14
  6. Step 6: Final answer
    x = 236,615.61

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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.