Home / 430,094,908.12-645,146,095.78-138,962,061.99

Finding the Fourth Proportional to 430,094,908.12, 645,146,095.78 and 138,962,061.99

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Solution

The fourth proportional to 430,094,908.12, 645,146,095.78 and 138,962,061.99 is: 208,444,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,094,908.12 : 645,146,095.78 = 138,962,061.99 : x
  2. Step 2: Convert to fraction form
    430,094,908.12/645,146,095.78 = 138,962,061.99/x
  3. Step 3: Cross multiply
    430,094,908.12x = 645,146,095.78 × 138,962,061.99
  4. Step 4: Simplify right side
    430,094,908.12x = 89,650,831,754,386,832
  5. Step 5: Solve for x
    x = 89,650,831,754,386,832/430,094,908.12
  6. Step 6: Final answer
    x = 208,444,299.30

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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.