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Finding the Fourth Proportional to 315,466.74, 435,292.70 and 186,387.39

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Solution

The fourth proportional to 315,466.74, 435,292.70 and 186,387.39 is: 257,184.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,466.74 : 435,292.70 = 186,387.39 : x
  2. Step 2: Convert to fraction form
    315,466.74/435,292.70 = 186,387.39/x
  3. Step 3: Cross multiply
    315,466.74x = 435,292.70 × 186,387.39
  4. Step 4: Simplify right side
    315,466.74x = 81,133,069,307.12
  5. Step 5: Solve for x
    x = 81,133,069,307.12/315,466.74
  6. Step 6: Final answer
    x = 257,184.23

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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.