Home / 385,307.18-577,999.65-145,360.88

Finding the Fourth Proportional to 385,307.18, 577,999.65 and 145,360.88

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Solution

The fourth proportional to 385,307.18, 577,999.65 and 145,360.88 is: 218,055.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,307.18 : 577,999.65 = 145,360.88 : x
  2. Step 2: Convert to fraction form
    385,307.18/577,999.65 = 145,360.88/x
  3. Step 3: Cross multiply
    385,307.18x = 577,999.65 × 145,360.88
  4. Step 4: Simplify right side
    385,307.18x = 84,018,537,763.69
  5. Step 5: Solve for x
    x = 84,018,537,763.69/385,307.18
  6. Step 6: Final answer
    x = 218,055.99

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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.