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Finding the Fourth Proportional to 282,347.04, 389,639.52 and 155,030.70

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Solution

The fourth proportional to 282,347.04, 389,639.52 and 155,030.70 is: 213,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,347.04 : 389,639.52 = 155,030.70 : x
  2. Step 2: Convert to fraction form
    282,347.04/389,639.52 = 155,030.70/x
  3. Step 3: Cross multiply
    282,347.04x = 389,639.52 × 155,030.70
  4. Step 4: Simplify right side
    282,347.04x = 60,406,087,533.26
  5. Step 5: Solve for x
    x = 60,406,087,533.26/282,347.04
  6. Step 6: Final answer
    x = 213,942.70

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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.