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Finding the Fourth Proportional to 310,317.40, 465,038.70 and 191,636.20

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Solution

The fourth proportional to 310,317.40, 465,038.70 and 191,636.20 is: 287,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,317.40 : 465,038.70 = 191,636.20 : x
  2. Step 2: Convert to fraction form
    310,317.40/465,038.70 = 191,636.20/x
  3. Step 3: Cross multiply
    310,317.40x = 465,038.70 × 191,636.20
  4. Step 4: Simplify right side
    310,317.40x = 89,118,249,320.94
  5. Step 5: Solve for x
    x = 89,118,249,320.94/310,317.40
  6. Step 6: Final answer
    x = 287,184.18

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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.