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Finding the Fourth Proportional to 315,122.68, 434,870.64 and 171,885.80

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Solution

The fourth proportional to 315,122.68, 434,870.64 and 171,885.80 is: 237,203.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,122.68 : 434,870.64 = 171,885.80 : x
  2. Step 2: Convert to fraction form
    315,122.68/434,870.64 = 171,885.80/x
  3. Step 3: Cross multiply
    315,122.68x = 434,870.64 × 171,885.80
  4. Step 4: Simplify right side
    315,122.68x = 74,748,087,852.91
  5. Step 5: Solve for x
    x = 74,748,087,852.91/315,122.68
  6. Step 6: Final answer
    x = 237,203.14

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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.