Home / 285,239.63-393,615.71-156,153.35

Finding the Fourth Proportional to 285,239.63, 393,615.71 and 156,153.35

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Solution

The fourth proportional to 285,239.63, 393,615.71 and 156,153.35 is: 215,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,239.63 : 393,615.71 = 156,153.35 : x
  2. Step 2: Convert to fraction form
    285,239.63/393,615.71 = 156,153.35/x
  3. Step 3: Cross multiply
    285,239.63x = 393,615.71 × 156,153.35
  4. Step 4: Simplify right side
    285,239.63x = 61,464,411,729.13
  5. Step 5: Solve for x
    x = 61,464,411,729.13/285,239.63
  6. Step 6: Final answer
    x = 215,483.42

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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.