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Finding the Fourth Proportional to 307,477.48, 424,319.58 and 171,507.94

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Solution

The fourth proportional to 307,477.48, 424,319.58 and 171,507.94 is: 236,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,477.48 : 424,319.58 = 171,507.94 : x
  2. Step 2: Convert to fraction form
    307,477.48/424,319.58 = 171,507.94/x
  3. Step 3: Cross multiply
    307,477.48x = 424,319.58 × 171,507.94
  4. Step 4: Simplify right side
    307,477.48x = 72,774,177,067.47
  5. Step 5: Solve for x
    x = 72,774,177,067.47/307,477.48
  6. Step 6: Final answer
    x = 236,681.32

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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.