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Finding the Fourth Proportional to 355,418.07, 530,376.53 and 317,566.77

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Solution

The fourth proportional to 355,418.07, 530,376.53 and 317,566.77 is: 473,892.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,418.07 : 530,376.53 = 317,566.77 : x
  2. Step 2: Convert to fraction form
    355,418.07/530,376.53 = 317,566.77/x
  3. Step 3: Cross multiply
    355,418.07x = 530,376.53 × 317,566.77
  4. Step 4: Simplify right side
    355,418.07x = 168,429,961,515.91
  5. Step 5: Solve for x
    x = 168,429,961,515.91/355,418.07
  6. Step 6: Final answer
    x = 473,892.51

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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.