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Finding the Fourth Proportional to 282,772.40, 390,216.04 and 155,447.08

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Solution

The fourth proportional to 282,772.40, 390,216.04 and 155,447.08 is: 214,511.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,772.40 : 390,216.04 = 155,447.08 : x
  2. Step 2: Convert to fraction form
    282,772.40/390,216.04 = 155,447.08/x
  3. Step 3: Cross multiply
    282,772.40x = 390,216.04 × 155,447.08
  4. Step 4: Simplify right side
    282,772.40x = 60,657,943,987.16
  5. Step 5: Solve for x
    x = 60,657,943,987.16/282,772.40
  6. Step 6: Final answer
    x = 214,511.54

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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.