Home / 287,330,787.06-396,516,471-155,171,770.91

Finding the Fourth Proportional to 287,330,787.06, 396,516,471 and 155,171,770.91

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Solution

The fourth proportional to 287,330,787.06, 396,516,471 and 155,171,770.91 is: 214,137,035.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,330,787.06 : 396,516,471 = 155,171,770.91 : x
  2. Step 2: Convert to fraction form
    287,330,787.06/396,516,471 = 155,171,770.91/x
  3. Step 3: Cross multiply
    287,330,787.06x = 396,516,471 × 155,171,770.91
  4. Step 4: Simplify right side
    287,330,787.06x = 61,528,162,998,071,080
  5. Step 5: Solve for x
    x = 61,528,162,998,071,080/287,330,787.06
  6. Step 6: Final answer
    x = 214,137,035.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.