Home / 278,868,347.40-418,302,521.10-125,813,339.40

Finding the Fourth Proportional to 278,868,347.40, 418,302,521.10 and 125,813,339.40

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Solution

The fourth proportional to 278,868,347.40, 418,302,521.10 and 125,813,339.40 is: 188,720,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,868,347.40 : 418,302,521.10 = 125,813,339.40 : x
  2. Step 2: Convert to fraction form
    278,868,347.40/418,302,521.10 = 125,813,339.40/x
  3. Step 3: Cross multiply
    278,868,347.40x = 418,302,521.10 × 125,813,339.40
  4. Step 4: Simplify right side
    278,868,347.40x = 52,628,037,059,029,968
  5. Step 5: Solve for x
    x = 52,628,037,059,029,968/278,868,347.40
  6. Step 6: Final answer
    x = 188,720,009.10

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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.