Home / 338,260,036.70-507,390,055.05-257,638,468.70

Finding the Fourth Proportional to 338,260,036.70, 507,390,055.05 and 257,638,468.70

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Solution

The fourth proportional to 338,260,036.70, 507,390,055.05 and 257,638,468.70 is: 386,457,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,260,036.70 : 507,390,055.05 = 257,638,468.70 : x
  2. Step 2: Convert to fraction form
    338,260,036.70/507,390,055.05 = 257,638,468.70/x
  3. Step 3: Cross multiply
    338,260,036.70x = 507,390,055.05 × 257,638,468.70
  4. Step 4: Simplify right side
    338,260,036.70x = 130,723,196,816,690,704
  5. Step 5: Solve for x
    x = 130,723,196,816,690,704/338,260,036.70
  6. Step 6: Final answer
    x = 386,457,703.05

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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.