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Finding the Fourth Proportional to 312,110.61, 430,709.58 and 168,867.51

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Solution

The fourth proportional to 312,110.61, 430,709.58 and 168,867.51 is: 233,035.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,110.61 : 430,709.58 = 168,867.51 : x
  2. Step 2: Convert to fraction form
    312,110.61/430,709.58 = 168,867.51/x
  3. Step 3: Cross multiply
    312,110.61x = 430,709.58 × 168,867.51
  4. Step 4: Simplify right side
    312,110.61x = 72,732,854,307.75
  5. Step 5: Solve for x
    x = 72,732,854,307.75/312,110.61
  6. Step 6: Final answer
    x = 233,035.51

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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.