Home / 287,319,920.09-396,501,482.70-155,160,905.85

Finding the Fourth Proportional to 287,319,920.09, 396,501,482.70 and 155,160,905.85

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Solution

The fourth proportional to 287,319,920.09, 396,501,482.70 and 155,160,905.85 is: 214,122,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,319,920.09 : 396,501,482.70 = 155,160,905.85 : x
  2. Step 2: Convert to fraction form
    287,319,920.09/396,501,482.70 = 155,160,905.85/x
  3. Step 3: Cross multiply
    287,319,920.09x = 396,501,482.70 × 155,160,905.85
  4. Step 4: Simplify right side
    287,319,920.09x = 61,521,529,226,600,096
  5. Step 5: Solve for x
    x = 61,521,529,226,600,096/287,319,920.09
  6. Step 6: Final answer
    x = 214,122,046.28

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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.