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Finding the Fourth Proportional to 312,035.80, 468,053.70 and 259,547.80

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Solution

The fourth proportional to 312,035.80, 468,053.70 and 259,547.80 is: 389,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,035.80 : 468,053.70 = 259,547.80 : x
  2. Step 2: Convert to fraction form
    312,035.80/468,053.70 = 259,547.80/x
  3. Step 3: Cross multiply
    312,035.80x = 468,053.70 × 259,547.80
  4. Step 4: Simplify right side
    312,035.80x = 121,482,308,116.86
  5. Step 5: Solve for x
    x = 121,482,308,116.86/312,035.80
  6. Step 6: Final answer
    x = 389,321.70

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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.