Home / 338,260,025.20-507,390,037.80-257,638,457.20

Finding the Fourth Proportional to 338,260,025.20, 507,390,037.80 and 257,638,457.20

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Solution

The fourth proportional to 338,260,025.20, 507,390,037.80 and 257,638,457.20 is: 386,457,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,260,025.20 : 507,390,037.80 = 257,638,457.20 : x
  2. Step 2: Convert to fraction form
    338,260,025.20/507,390,037.80 = 257,638,457.20/x
  3. Step 3: Cross multiply
    338,260,025.20x = 507,390,037.80 × 257,638,457.20
  4. Step 4: Simplify right side
    338,260,025.20x = 130,723,186,537,441,680
  5. Step 5: Solve for x
    x = 130,723,186,537,441,680/338,260,025.20
  6. Step 6: Final answer
    x = 386,457,685.80

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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.