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Finding the Fourth Proportional to 472,172.13, 651,578.58 and 257,307.62

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Solution

The fourth proportional to 472,172.13, 651,578.58 and 257,307.62 is: 355,074.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,172.13 : 651,578.58 = 257,307.62 : x
  2. Step 2: Convert to fraction form
    472,172.13/651,578.58 = 257,307.62/x
  3. Step 3: Cross multiply
    472,172.13x = 651,578.58 × 257,307.62
  4. Step 4: Simplify right side
    472,172.13x = 167,656,130,404.89
  5. Step 5: Solve for x
    x = 167,656,130,404.89/472,172.13
  6. Step 6: Final answer
    x = 355,074.18

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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.