Home / 249,686,490.80-374,436,834.60-85,878,268.40

Finding the Fourth Proportional to 249,686,490.80, 374,436,834.60 and 85,878,268.40

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Solution

The fourth proportional to 249,686,490.80, 374,436,834.60 and 85,878,268.40 is: 128,785,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,686,490.80 : 374,436,834.60 = 85,878,268.40 : x
  2. Step 2: Convert to fraction form
    249,686,490.80/374,436,834.60 = 85,878,268.40/x
  3. Step 3: Cross multiply
    249,686,490.80x = 374,436,834.60 × 85,878,268.40
  4. Step 4: Simplify right side
    249,686,490.80x = 32,155,986,980,625,212
  5. Step 5: Solve for x
    x = 32,155,986,980,625,212/249,686,490.80
  6. Step 6: Final answer
    x = 128,785,449.62

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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.