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Finding the Fourth Proportional to 355,210.68, 530,224.82 and 310,369.88

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Solution

The fourth proportional to 355,210.68, 530,224.82 and 310,369.88 is: 463,290.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,210.68 : 530,224.82 = 310,369.88 : x
  2. Step 2: Convert to fraction form
    355,210.68/530,224.82 = 310,369.88/x
  3. Step 3: Cross multiply
    355,210.68x = 530,224.82 × 310,369.88
  4. Step 4: Simplify right side
    355,210.68x = 164,565,813,756.42
  5. Step 5: Solve for x
    x = 164,565,813,756.42/355,210.68
  6. Step 6: Final answer
    x = 463,290.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.