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Finding the Fourth Proportional to 539,386.40, 808,885.20 and 273,058.40

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Solution

The fourth proportional to 539,386.40, 808,885.20 and 273,058.40 is: 409,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,386.40 : 808,885.20 = 273,058.40 : x
  2. Step 2: Convert to fraction form
    539,386.40/808,885.20 = 273,058.40/x
  3. Step 3: Cross multiply
    539,386.40x = 808,885.20 × 273,058.40
  4. Step 4: Simplify right side
    539,386.40x = 220,872,898,495.68
  5. Step 5: Solve for x
    x = 220,872,898,495.68/539,386.40
  6. Step 6: Final answer
    x = 409,489.19

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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.