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Finding the Fourth Proportional to 282,603.81, 389,988.75 and 155,276.67

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Solution

The fourth proportional to 282,603.81, 389,988.75 and 155,276.67 is: 214,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,603.81 : 389,988.75 = 155,276.67 : x
  2. Step 2: Convert to fraction form
    282,603.81/389,988.75 = 155,276.67/x
  3. Step 3: Cross multiply
    282,603.81x = 389,988.75 × 155,276.67
  4. Step 4: Simplify right side
    282,603.81x = 60,556,154,437.46
  5. Step 5: Solve for x
    x = 60,556,154,437.46/282,603.81
  6. Step 6: Final answer
    x = 214,279.33

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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.