Finding the Fourth Proportional to 390,382,221.12, 585,574,699.68 and 99,249,375.20
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Solution
The fourth proportional to 390,382,221.12, 585,574,699.68 and 99,249,375.20 is: 148,874,410.60
Step by Step Solution
- Step 1: Write the proportion equation
390,382,221.12 : 585,574,699.68 = 99,249,375.20 : x - Step 2: Convert to fraction form
390,382,221.12/585,574,699.68 = 99,249,375.20/x - Step 3: Cross multiply
390,382,221.12x = 585,574,699.68 × 99,249,375.20 - Step 4: Simplify right side
390,382,221.12x = 58,117,923,076,167,640 - Step 5: Solve for x
x = 58,117,923,076,167,640/390,382,221.12 - Step 6: Final answer
x = 148,874,410.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.