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Finding the Fourth Proportional to 259,314.80, 389,555.40 and 249,400.40

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Solution

The fourth proportional to 259,314.80, 389,555.40 and 249,400.40 is: 374,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,314.80 : 389,555.40 = 249,400.40 : x
  2. Step 2: Convert to fraction form
    259,314.80/389,555.40 = 249,400.40/x
  3. Step 3: Cross multiply
    259,314.80x = 389,555.40 × 249,400.40
  4. Step 4: Simplify right side
    259,314.80x = 97,155,272,582.16
  5. Step 5: Solve for x
    x = 97,155,272,582.16/259,314.80
  6. Step 6: Final answer
    x = 374,661.50

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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.