Home / 378,007,417.29-521,765,530.50-219,277,652.76

Finding the Fourth Proportional to 378,007,417.29, 521,765,530.50 and 219,277,652.76

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Solution

The fourth proportional to 378,007,417.29, 521,765,530.50 and 219,277,652.76 is: 302,670,041.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,007,417.29 : 521,765,530.50 = 219,277,652.76 : x
  2. Step 2: Convert to fraction form
    378,007,417.29/521,765,530.50 = 219,277,652.76/x
  3. Step 3: Cross multiply
    378,007,417.29x = 521,765,530.50 × 219,277,652.76
  4. Step 4: Simplify right side
    378,007,417.29x = 114,411,520,819,116,192
  5. Step 5: Solve for x
    x = 114,411,520,819,116,192/378,007,417.29
  6. Step 6: Final answer
    x = 302,670,041.87

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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.