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Finding the Fourth Proportional to 421,411.32, 581,547.60 and 230,424.84

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Solution

The fourth proportional to 421,411.32, 581,547.60 and 230,424.84 is: 317,986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,411.32 : 581,547.60 = 230,424.84 : x
  2. Step 2: Convert to fraction form
    421,411.32/581,547.60 = 230,424.84/x
  3. Step 3: Cross multiply
    421,411.32x = 581,547.60 × 230,424.84
  4. Step 4: Simplify right side
    421,411.32x = 134,003,012,682.38
  5. Step 5: Solve for x
    x = 134,003,012,682.38/421,411.32
  6. Step 6: Final answer
    x = 317,986.27

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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.