Home / 287,416,389.24-396,810,384.30-187,040,466.72

Finding the Fourth Proportional to 287,416,389.24, 396,810,384.30 and 187,040,466.72

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Solution

The fourth proportional to 287,416,389.24, 396,810,384.30 and 187,040,466.72 is: 258,230,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,416,389.24 : 396,810,384.30 = 187,040,466.72 : x
  2. Step 2: Convert to fraction form
    287,416,389.24/396,810,384.30 = 187,040,466.72/x
  3. Step 3: Cross multiply
    287,416,389.24x = 396,810,384.30 × 187,040,466.72
  4. Step 4: Simplify right side
    287,416,389.24x = 74,219,599,478,814,560
  5. Step 5: Solve for x
    x = 74,219,599,478,814,560/287,416,389.24
  6. Step 6: Final answer
    x = 258,230,227.15

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1.5x scale

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.