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Finding the Fourth Proportional to 268,588.61, 370,683.78 and 153,904.38

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Solution

The fourth proportional to 268,588.61, 370,683.78 and 153,904.38 is: 212,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,588.61 : 370,683.78 = 153,904.38 : x
  2. Step 2: Convert to fraction form
    268,588.61/370,683.78 = 153,904.38/x
  3. Step 3: Cross multiply
    268,588.61x = 370,683.78 × 153,904.38
  4. Step 4: Simplify right side
    268,588.61x = 57,049,857,336.96
  5. Step 5: Solve for x
    x = 57,049,857,336.96/268,588.61
  6. Step 6: Final answer
    x = 212,406.09

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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.