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Finding the Fourth Proportional to 405,058.40, 607,514.70 and 255,030.20

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Solution

The fourth proportional to 405,058.40, 607,514.70 and 255,030.20 is: 382,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,058.40 : 607,514.70 = 255,030.20 : x
  2. Step 2: Convert to fraction form
    405,058.40/607,514.70 = 255,030.20/x
  3. Step 3: Cross multiply
    405,058.40x = 607,514.70 × 255,030.20
  4. Step 4: Simplify right side
    405,058.40x = 154,934,595,443.94
  5. Step 5: Solve for x
    x = 154,934,595,443.94/405,058.40
  6. Step 6: Final answer
    x = 382,499.40

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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.