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Finding the Fourth Proportional to 401,509.51, 554,129.40 and 240,364.51

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Solution

The fourth proportional to 401,509.51, 554,129.40 and 240,364.51 is: 331,730.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,509.51 : 554,129.40 = 240,364.51 : x
  2. Step 2: Convert to fraction form
    401,509.51/554,129.40 = 240,364.51/x
  3. Step 3: Cross multiply
    401,509.51x = 554,129.40 × 240,364.51
  4. Step 4: Simplify right side
    401,509.51x = 133,193,041,707.59
  5. Step 5: Solve for x
    x = 133,193,041,707.59/401,509.51
  6. Step 6: Final answer
    x = 331,730.73

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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.