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Finding the Fourth Proportional to 282,907.52, 390,403.44 and 155,582.72

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Solution

The fourth proportional to 282,907.52, 390,403.44 and 155,582.72 is: 214,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,907.52 : 390,403.44 = 155,582.72 : x
  2. Step 2: Convert to fraction form
    282,907.52/390,403.44 = 155,582.72/x
  3. Step 3: Cross multiply
    282,907.52x = 390,403.44 × 155,582.72
  4. Step 4: Simplify right side
    282,907.52x = 60,740,029,092.56
  5. Step 5: Solve for x
    x = 60,740,029,092.56/282,907.52
  6. Step 6: Final answer
    x = 214,699.24

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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.