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Finding the Fourth Proportional to 257,048.88, 385,569.36 and 70,059.84

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Solution

The fourth proportional to 257,048.88, 385,569.36 and 70,059.84 is: 105,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,048.88 : 385,569.36 = 70,059.84 : x
  2. Step 2: Convert to fraction form
    257,048.88/385,569.36 = 70,059.84/x
  3. Step 3: Cross multiply
    257,048.88x = 385,569.36 × 70,059.84
  4. Step 4: Simplify right side
    257,048.88x = 27,012,927,670.50
  5. Step 5: Solve for x
    x = 27,012,927,670.50/257,048.88
  6. Step 6: Final answer
    x = 105,088.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.