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Finding the Fourth Proportional to 282,808.86, 390,266.19 and 155,483.46

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Solution

The fourth proportional to 282,808.86, 390,266.19 and 155,483.46 is: 214,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,808.86 : 390,266.19 = 155,483.46 : x
  2. Step 2: Convert to fraction form
    282,808.86/390,266.19 = 155,483.46/x
  3. Step 3: Cross multiply
    282,808.86x = 390,266.19 × 155,483.46
  4. Step 4: Simplify right side
    282,808.86x = 60,679,937,542.22
  5. Step 5: Solve for x
    x = 60,679,937,542.22/282,808.86
  6. Step 6: Final answer
    x = 214,561.66

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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.