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Finding the Fourth Proportional to 374,477.99, 516,721.82 and 213,312.56

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Solution

The fourth proportional to 374,477.99, 516,721.82 and 213,312.56 is: 294,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,477.99 : 516,721.82 = 213,312.56 : x
  2. Step 2: Convert to fraction form
    374,477.99/516,721.82 = 213,312.56/x
  3. Step 3: Cross multiply
    374,477.99x = 516,721.82 × 213,312.56
  4. Step 4: Simplify right side
    374,477.99x = 110,223,250,581.89
  5. Step 5: Solve for x
    x = 110,223,250,581.89/374,477.99
  6. Step 6: Final answer
    x = 294,338.40

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1.5x scale

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.