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Finding the Fourth Proportional to 421,351.98, 581,465.74 and 230,365.38

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Solution

The fourth proportional to 421,351.98, 581,465.74 and 230,365.38 is: 317,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,351.98 : 581,465.74 = 230,365.38 : x
  2. Step 2: Convert to fraction form
    421,351.98/581,465.74 = 230,365.38/x
  3. Step 3: Cross multiply
    421,351.98x = 581,465.74 × 230,365.38
  4. Step 4: Simplify right side
    421,351.98x = 133,949,574,986.37
  5. Step 5: Solve for x
    x = 133,949,574,986.37/421,351.98
  6. Step 6: Final answer
    x = 317,904.22

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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.