Home / 390,259.18-584,968.84-255,272.40

Finding the Fourth Proportional to 390,259.18, 584,968.84 and 255,272.40

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Solution

The fourth proportional to 390,259.18, 584,968.84 and 255,272.40 is: 382,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,259.18 : 584,968.84 = 255,272.40 : x
  2. Step 2: Convert to fraction form
    390,259.18/584,968.84 = 255,272.40/x
  3. Step 3: Cross multiply
    390,259.18x = 584,968.84 × 255,272.40
  4. Step 4: Simplify right side
    390,259.18x = 149,326,399,712.02
  5. Step 5: Solve for x
    x = 149,326,399,712.02/390,259.18
  6. Step 6: Final answer
    x = 382,633.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.