Finding the Fourth Proportional to 420,764.98, 631,332.45 and 221,038.96
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Solution
The fourth proportional to 420,764.98, 631,332.45 and 221,038.96 is: 331,655.61
Step by Step Solution
- Step 1: Write the proportion equation
420,764.98 : 631,332.45 = 221,038.96 : x - Step 2: Convert to fraction form
420,764.98/631,332.45 = 221,038.96/x - Step 3: Cross multiply
420,764.98x = 631,332.45 × 221,038.96 - Step 4: Simplify right side
420,764.98x = 139,549,068,162.25 - Step 5: Solve for x
x = 139,549,068,162.25/420,764.98 - Step 6: Final answer
x = 331,655.61
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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.