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Finding the Fourth Proportional to 282,710.60, 390,143.63 and 153,649.07

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Solution

The fourth proportional to 282,710.60, 390,143.63 and 153,649.07 is: 212,037.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,710.60 : 390,143.63 = 153,649.07 : x
  2. Step 2: Convert to fraction form
    282,710.60/390,143.63 = 153,649.07/x
  3. Step 3: Cross multiply
    282,710.60x = 390,143.63 × 153,649.07
  4. Step 4: Simplify right side
    282,710.60x = 59,945,204,349.33
  5. Step 5: Solve for x
    x = 59,945,204,349.33/282,710.60
  6. Step 6: Final answer
    x = 212,037.35

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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.