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Finding the Fourth Proportional to 355,802.10, 533,703.15 and 145,590.90

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Solution

The fourth proportional to 355,802.10, 533,703.15 and 145,590.90 is: 218,386.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,802.10 : 533,703.15 = 145,590.90 : x
  2. Step 2: Convert to fraction form
    355,802.10/533,703.15 = 145,590.90/x
  3. Step 3: Cross multiply
    355,802.10x = 533,703.15 × 145,590.90
  4. Step 4: Simplify right side
    355,802.10x = 77,702,321,941.34
  5. Step 5: Solve for x
    x = 77,702,321,941.34/355,802.10
  6. Step 6: Final answer
    x = 218,386.35

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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.