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Finding the Fourth Proportional to 312,421.75, 468,775.43 and 170,053.75

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Solution

The fourth proportional to 312,421.75, 468,775.43 and 170,053.75 is: 255,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,421.75 : 468,775.43 = 170,053.75 : x
  2. Step 2: Convert to fraction form
    312,421.75/468,775.43 = 170,053.75/x
  3. Step 3: Cross multiply
    312,421.75x = 468,775.43 × 170,053.75
  4. Step 4: Simplify right side
    312,421.75x = 79,717,019,779.36
  5. Step 5: Solve for x
    x = 79,717,019,779.36/312,421.75
  6. Step 6: Final answer
    x = 255,158.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.