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Finding the Fourth Proportional to 421,533.99, 581,716.92 and 230,547.39

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Solution

The fourth proportional to 421,533.99, 581,716.92 and 230,547.39 is: 318,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,533.99 : 581,716.92 = 230,547.39 : x
  2. Step 2: Convert to fraction form
    421,533.99/581,716.92 = 230,547.39/x
  3. Step 3: Cross multiply
    421,533.99x = 581,716.92 × 230,547.39
  4. Step 4: Simplify right side
    421,533.99x = 134,113,314,716.25
  5. Step 5: Solve for x
    x = 134,113,314,716.25/421,533.99
  6. Step 6: Final answer
    x = 318,155.40

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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.