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Finding the Fourth Proportional to 282,649.34, 390,041.66 and 155,300.34

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Solution

The fourth proportional to 282,649.34, 390,041.66 and 155,300.34 is: 214,306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,649.34 : 390,041.66 = 155,300.34 : x
  2. Step 2: Convert to fraction form
    282,649.34/390,041.66 = 155,300.34/x
  3. Step 3: Cross multiply
    282,649.34x = 390,041.66 × 155,300.34
  4. Step 4: Simplify right side
    282,649.34x = 60,573,602,412.16
  5. Step 5: Solve for x
    x = 60,573,602,412.16/282,649.34
  6. Step 6: Final answer
    x = 214,306.54

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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.