Home / 338,260,040.70-507,390,061.05-257,638,472.70

Finding the Fourth Proportional to 338,260,040.70, 507,390,061.05 and 257,638,472.70

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Solution

The fourth proportional to 338,260,040.70, 507,390,061.05 and 257,638,472.70 is: 386,457,709.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,260,040.70 : 507,390,061.05 = 257,638,472.70 : x
  2. Step 2: Convert to fraction form
    338,260,040.70/507,390,061.05 = 257,638,472.70/x
  3. Step 3: Cross multiply
    338,260,040.70x = 507,390,061.05 × 257,638,472.70
  4. Step 4: Simplify right side
    338,260,040.70x = 130,723,200,392,081,760
  5. Step 5: Solve for x
    x = 130,723,200,392,081,760/338,260,040.70
  6. Step 6: Final answer
    x = 386,457,709.05

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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.